Gas-compressing apparatus.



E. T. WILLIAMS. GAS CQMPRESOIINYG APPARATUS.

APPUCATION FILED MAY 25, L915;

Patented May 14, 1918.

a SHEETS-SHEET 1.

atlozmez a h. T. \MLLLAMS.

GA COMPRESSlNG APPARATUS.

APPLICATION FILED MAY 25. 9| 5.

3 SHEETSSHEET 3.

Patented Ma 14, 1918.

EDVVABD T. WILLIAMS, OF NEW YORK, N. Y.

GAS-CGMPRESSING APPARATUS.

Specification of Letters Patent.

Patented May 14, 1918.

Application filed May 25, 1915. Serial No. 30,282.

. To all whom it may concern Be it known that I, Enwnno T. VVILLIAMS, a citizen of the United States. residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Gas-Compressing itpparatus, of which the following is a full, clear, and exact description.

The invention which forms the subject of the present application relates to gas-compressing apparatus, particularly for refrigcrating machines designed for the use of small consumers, as in private dwellings, hotels, etc. In general the refrigerating ma chine operates on the usual principle, 'a compressed and cooled gas being discharged through a small orifice into an expansion chamber, the latter being usually in the form of a coil of pipe suitably disposed in a refrigerator or other chamber. The chief object qf the invention is to overcome certain difliculties often encountered in machinesof this class. To this and other ends the invention consists of the novel features of construction and combinations of elements hereinafter described.

One form of the invention is illustrated 'in the accompanying drawings, in which- Figure 1 shows the complete machine in front elevation.

F ig. 2 is a vertical section, substantially on line 2-2 of Fig. 6.

Fig. 3 is a vertical section about on line 33 of. Fig. 6.

Fig. 4. is a detail section of the outlet of the condensing chamber.

Fig. 5 is a plan view of the lower or pump chamber, the condensing chamber being removed.

Fig. 6 is a horizontal section about on line 6-6 of Fig. ,1.

In the machine illustrated, the compressor 10, in the form of a rotary pump, is located in a chamber 11 which for convenience may be termed the pump chamber. This chamber is a casting and is composed of an upright cylindrical portion and a short cylindrical. portion 11 extending from one side thereof, the whole being 'T-shaped, roughly speaking, as indicated in Fig. 6. Across the pump ,chamber and integral with the walls thereof is a vertical partition 12 providing at one side of the chamber an open-topped .wcll 13 for a supply of lubricant as hereafter described. Across the top of the chamber and integral with the walls there of and with the vertical partition 12 is an inclined partition 14 which serves both as the top of the pump chamber and the bottom of the superimposed condensing or compression chamber 15. The latter is a sheet metal dome having aflange at its bottom for attachment to a flange at the top of the pumpchamber.

The lubricant well 13 is crossed at its center by a horizontal open-ended tubular member 16 (Figs. 2 and 3) integral with the partition 12 and the outer wall of the pump chamber, and above the member 16 the well is crossed by two tubular members 17, 18, extending in a general radial direction relative to the pump chamber and integral with the outer wall of the latter and with the partition 12. The members 17 and 18 are provided with valves 19, 20, and pressure gages 21, 22, for the purpose fully described in my copending application Ser. No. 876,780. It will be sufllcient here to say that when the machine is in operation the two valves are in the positions shown, that is, open.

The pump chamber extension 11*, closed by a removable cover 11", is large enough to admit the pump or compressor 10, the inner face. of which is machined to fit the contiguous face of the partition 12, machined for the purpose, and the compressor is held inplace by screws 10". A. tubular bearing member 10 preferably integral with the face of the compressor 10, extends into the tubular member 16. Through the partition 12 are two ports into the tubular members 17, 18, to receive the coupling tubes 23, 24,

which make a slip fit with the said ports and also with registering ports in the compressor. At the meeting faces of the ports, around the coupling tubes, are compressible gaskets as 25, Fig. 6, to make the joints perfectly gas-tight. A similar gasket is pr0- -vided around the bearing member 10 at the inner end of the tubular member 16. The tubular bearing 1O (Fig. 3) is threaded at its outer end-to receive, 111 the enlarged outer end of the; tubular member 16, a nut :26 which can "be screwed up against the shoulder in said member to draw the compressor tightly against the partition 12, compressing the askets which surround the coupling tubes between the partition and the compressor and the gasket around the bearing member 10. The nut is rotated by means of spanner slots shown in Fig. 2. Outside of the nut is a sleeve 27, also threaded on the bearing member 10". From the foregoing description it will be seen that to remove the coi'npressor it only necessary to remove the manhole cover 11", screws 10*, sleeve 27 and nut 26, whereupon the compressor, with its bearing member 10 and shaft 10 (previously uncoupled from the driving motor, not shown) can be drawn out through the pu1npcasing extension 11. Replacement is equally easy.

The coupling 2i connects the suction. side of the compressor to the inner end of a horizontal passage 28 (Fig. 6 at the top of the partition 12, which passage at its outer end communicates with a vertical passage 29 at the side of'the partition, 12. The walls of both the passages mentioned are integral with the partition and the wall of the pump chamber. At the bottom of the passa 'e 29 a )lPP 30 connects the some with the outlet si( e of the expansion chamber, not shown. The high pressure side of the compressor discharges through the coupling tube 2.3 into the passage 17, and extending upwardly from the latter is a pipe 81 to deliver the compressed gas into the top of the condcnsing chamber 15. In the latter is a cool.- ing coil 32, connected at one end by a flanged elbow 33 to an inlet chamber 34- inside the pump chamber at the top. below the horizontal partition 14, said chamber being integral with the pump chamber wall and the two partitions thereof. The chamber 3% is provided with an inlet port 3ft for connection with a source (not shown) of water or other cooling agent. The outlet end oi the cooling coil is connected by flanged elbow to a port (in the inclined partition 14.) from which leads :1 depending pipe 36 by which the cooling agent is discharged into the lower portion of the pump chamber. In one side of the latter is an outlet port 37 for connection with a waste pipe (not shown)-to carry off the cooling agent. The port 37 is above the compressor, so that the latter will always be submerged in the cooling agent, thereby effectively getting rid of the heat of compression liberated in the compressor.

The gas drawn from the expansion chan her (not shown) by way of pipe 30, Figs. 2; 3 and and delivered through pipe 31 into the condensing chamber 15 is liquefied in the latter and is discharged therefrom by pipe which is connected to the top of" a vertical passage or conduit 39 in the well 13, the walls of which conduit are integral with the partition 12 and the wall of the pump chamber at one side of the former. A pipe 4t connected to the bottom of passage 39, de-

livers the liquefied gas to the expansion valve (not shown) of the expansion chamber.

The well 13 cc iains a supply of lubricant of low freezing point, such as glycerin, and

is filled to asuitable height above the port .the latter in (Fig A underside o the tubular niemoer well lug open to the con into the inn tiacted porti and thence ii the shaft hear ment at the i ber 10" is a p space surrounding the conof tee bearing'member 10 irou h pert 4'2 in the latter to in the threaded. enlargeend of the hearing memat 3. compressed a follower sleeve ii aiding the shaft and providing an in nzlar ce around the lat tor and. haviu r ort in its top. The outer end of i is -zillower ti is formedas a stutling box i l. containing a packing 47 which can be compre A helical s3 d v around the follower, with one end the flange on the follower and the ot er end against a flange on the sleeve l9" it on the tollmver urges the. packing 43. The ilha flange on its ista stopfiange on provided around the sl-i 4: constitutes a smell reservoir in which a quantity of oil to prevent a 22' com' in contact with the glycerin. Th a matter of considerable importance since glycerin creeping out to the ssed by a screw plug air around the strait ewzntually hardens at the point where it meets the air, forming a i tough shin. T and sooner is shin keeps building up unhto stall the motor constri bodyoi 0 At the livered to ti 3 4-2, is under pressure, while the oil is not and hence there is no danger of oil working its way into the interior of the machine.

The working pa its inside the pump 10 are lubricated witi cerin supplied to the suction line on the low pressure or suction side of the p purpose the passage 18 is pro 1 sn'mll tube 50, Fig. 2,

e l m rin, which is dc an i hearings through port ater may become thick iii extending 'nto the lubricant in the well glycerin will be forced into tin The inlet rilice of the tul so as not flood the pump .cant, which 1e gas into the pump.

it carries w is discha condensi: the lique 'ycerin ins down the inclined partit through the spout 51 into the weil The spout is extended to a point close enough to the window 52 to permit the drops ct glycerin to be readily seen as they issue ru n spout. is its? the machine has in use for some time the lubricant in t. contains more or less course, under gas entrapped or in suspension, and, of pressure. Ordinarily this does no harm, but if for any reason the pressure in the condensingchamber is relieved, the

gas, expanding in the lubricant, causes bubles to form, which Wlll often detach themselves from the surface, and, breaking against the top of the chamber, cause a mist or rain provided means for keeping the lubricant out of the outlet pipe. For this purpose the intake orifice of the pipe 88, (Figs. 3 and 4) is equipped with umbrella or deflector 53,

and immediately below the latter, and of somewhat smaller diameter, is an elevation or curb 54 on the inclined partition I l. The umbrella receives the falling drops of lubricant and deflects the same outside of the curbwhile the latter deflects the thin layer of lubricant running down the inclined plate or partition 1%. Hence there is no lubricant directly under the orifice of the outlet pipe, and accordingly none, or practically none, can find its way into the pipe. If any bubbles form under or float under the umbrella they can collect on the underside of the latter above the depending end of the pipe,

which, it will be observed, extends down a slight distance below the top of the umbrclla. Very few bubbles, if any, can get into the pipe, and such amount of glycerin thus carried to the expansion valve us too small to cause serious trouble.

A pipe 55, Figs. 2 and 3, provided with Y a valve (not shown) and connected to the bottom of the lubricant Well 13, permits emptying of the latter when desired.

It is to be understood that the-invention is not, limited to the specific construction herein illustrated and described, but can be embodied in other forms without departure from its spirit.

I claim:

1. In a compressing apparatus, the combination of a pump chamber having a partition providing a well and having a manhole opening in its side opposite said partition; an open-ended tubular member extending from the partition and across the well;

a compressor in the pump chamber, mounted on the partition and havinga bearing member extending into the aforesaid tubular member; releasable means for holding the compressor in position on the partition and the latter.

hole; a partition across the permitting removal of the compressor and its bearing member through the said manhole opening; and a removable closure for 2. In a"compressing apparatus, the combination of a pump chamber having a manpump chamber,

providing a well at the side or the chamber opposite the man-hole; a tubular 'member extending across the well, with one end open through the said partition and the other open through the Wall of the pump chamher; a compressor in the pump chamber,-

outside of tlie well and mounted on the partition over the end of the said tubular member and in line with said man-hole for removal therethrough; a bearing extending from the compressor into said tubular memher; an actuating shaft extending through the tubular memberand the bearing to the compressor; releasable means to hold the compressor in place on the partition; and a removable closure for the manhole.

3. In a-comprsssing apparatus, the combination of a pump chamber having a manhole at one side; a partition acrosstheopposite side of the chamber, providing a Well; a compressor removably mounted on the partit-ion outside of the well and in line with the man-hole for removal therethrough; and

intake and discharge conduits located in said well and communicating with the compressor through said partition.

4. In a compressing apparatus, the combination of a pump chamber having a partition providing a well; a compressor removably mounted on the partition outside of the well; and intake and discharge conduits located in the Well and communicating with the compressor through the partition.

5. In a compressing apparatus, the combination of a pump chamber having a lubricant well at one side; a tubular member extending across the well and havin a port for receiving lubricant from the Well; a compressor mounted on the inner Wall of the Well outside of the latter; an actuating shaft extending through the tubular member to the compressor; and a bearing mem ber, inside said tubular member and having a port for receiving lubricant therefrom.

6. In a compressing apparatus, the combination of a pump chamber having a partition providing a lubricant Well at one side; a compressor mounted on the partition outside the lubricant well; an actuating shaft extending across the lubricant well to the compressor; and a bearing member for the shaft, extending from the compressor toward the outer wall of the lubricant Well and adapted to receive lubricant therefrom.

7. In a compressing apparatus, the combination of a pump chamber having a partition providing a lubricant Well, and having a tubular member spanning the Well, said member having a port to receive lubricant from the Well; a compressor mounted on the partition; a compressor-shaft bearing in the tubular member, having near its inner end a port for receiving lubricant from the tubular member; and means-providing an oil reservoir at the outer end of the bearing to prevent the lubricant from coming in contact with the air. 7

8. In a compressin apparatus, the combination of a pump 0 amber having a well for lubricant and having a tubular member spanning the-well and provided with a port to receive. lubricant from the Well; a compressor arranged in the pump'chamber and having an actuatin shaft extending through said tubular mem er; a bearing for said shaft in the tubular member, havin a port to receive lubricant from said mem er; and means providing an oil reservoiraround the shaft at the outer end of said bearing to prevent access to air to lubricant exuding from said bearing.

9. In a compressing apparatus, the combi .nation of a pump chamber having a lubri- Well and inclosing the bearing member, and

having an internal shoulder; a nut threaded on the bearing member and abutting on the said shoulder; and an actuating shaft extending through said bearing member to the compressor.

In testimony whereof I hereunto aiiiX my signature.

EDWARD T. V iIfiIAltiS. 

